Stamping-machine.



Patented Apr. 29, I902. H. L. WILSON. STAMPING MACHINE.

(Application filed Jan. 21, 1902.)

(No Model.)

UNITED STATES PATENT OFFICE.

HOWARD L. WILSON, OF BALTIMORE, MARYLAND, ASSIGNOR TO CHARLES HOWARDHOOK, OF BALTIMORE, MARYLAND.

STAMPING-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 699,051 dated April29, 1902.

7 Application filed January 21, 1902. Serial No. 90,611. (No model.)

To all whom it may concern.-

Be it known that I, HOWARD L. WILsoN, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements. in Stamping-Machines, of which thefollowing is a specification.

This invention relates to improvements in stamping-machines wherein areciprocating die and a revolving disk-holder are employed. Theinvention is particularly adapted for stamping a previously-cutsheet-metal disk into the form of a convex or circular arched plate.These convex plates are commonly termed buttons by the trade, but inreality are not like garment-buttons, but differ from the latter in thatthey are provided with but one central hole. These so-called buttons areextensively used by builders in securing roofing fabrics to theframework of buildings and are also used by toy-manufacturers forornamental and other purposes.

The invention consists in the mechanism for intermittently revolving thedisk-holder and locking same to prevent movement during the stampingoperation.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a side elevation of the machine. Fig. 2 is a horizontalsection on the line 2 2 of Fig. 1. Fig. 3 is aplan detail view of thereciprocatingslide and bolt which looks the diskholder, the bolt beingshown retracted. Fig. at is a side elevation of the locking-bolt. Fig. 5illustrates a plan and also a sectional View of one of the sheet-metalbuttons produced by the machine.

In the drawings, A designates the base, and

13 two vertical standards, one at each side of and above the base. Thesestandards support a horizontal shaft 0. Suitable mechanism is alsosupported by the standards B for vertically reciprocating the diepunchd. This mechanism is not shown, as it is not a part of the presentinvention and any suitable mechanism may be employed.

A stationary bed-plate 6 extends horizontally in front of the standardsB, and said plate supports a vertical spindle f, which carries adisk-holder g. This disk holder is revoluble on the spindle and isprovided with a series of die-holes h, which extend entirely throughsaid disk-holder and are arranged in a circular path at equal distancesapart, whereby when the holder is revolved the 5 5 die-holes will bebrought successively beneath the die-punch d. This disk-holder restsupon and fits closely against the bed-plate e, and thereby the metaldisks are prevented from dropping entirely through the die-holes h whenthe holder 9 is revolved. A series of notches 2', equal in number to thedie-holes h, are provided around the circumferential edge of thedisk-holder, and these notches are also arranged at equal distancesapart. Secured to the bed-plate e at the side of the disk-holder g is aguide-block j, which is provided with a central slot or groove 7t, and aslide -'bar Z fits and reciprocates in said groove k.

An eccentric m is secured on the shaft 0, and its ring is provided withan eccentricrod m. A lever 02 is pivoted centrally between its ends on astud n to the side of one of the standards 13, and the upper end of saidlever has a jointed connection with the eccentric-rod m, and thelowerend of said lever has a jointed connection with one end of a link 0, theother end of which is connected to the reciprocating slide-bar Z.

The slide bar Z carries on its top surface a pawl 19, which projectsinward toward the revoluble disk-holder, and said pawl is provided atits pivoted end with a laterally-projecting hook or pin 19. A spiralspringq is connected at one endto the said pin 19 on the pawl and at theother end to a post p? on the slidebar Z. It will be seen that thespring keeps the free end of the pawl 19 pressed against the Icircumferential edge of the disk-holder, so 0 that it will enter one ofthe notches 2' when the bar Z is reciprocated. The slide-bar Z alsocarries a wedge shaped block 1', with its pointed or tapered end 0"foremost, and said block reciprocates with the bar.

A housing 8 is secured on top of the guideblock j and extends crosswisethereof over the slide-bar Z, and said housing is provided on its loweredge with a slot .9, which extends in a direction parallel with the barl, so that me when the said bar and wedge-shaped block r arereciprocated the latter will pass through said slot. A locking-bolt 25has at one end a tongue it, which engages any one of the notches 11 onthe disk-holder, and this bolt is within the said housing 3 and isprovided on its bottom with a tapered slot t, which latter has positionover the slide-bar Z, whereby when the slide-bar and wedge-shaped block1* are reciprocated in the direction of the arrow the tapered end 1" ofthe wedge-block will press against the tapered side of the slot 25 ofthe bolt and cause the latter to be retracted in order to withdraw itstongue to from the notch 11 with which it may be engaged. A spiralspring v is connected at one end to the locking-bolt and at the otherend to a post 1) on the housing and serves to keep the bolt pressedoutward so the tongue may engage a notch when the block 1 and slide arewithdrawn. A chute 10, secured to the bed-plate at one side and belowthe disk-holder, serves to convey the stamped buttons away as they dropout of the die-holes it over the chute.

The operation is as follows: The metal disks are fed into the die-holes71, of the holder either by hand or automatically, as desired. The slidel, carrying the pawl and wedgeblock 0', is then reciprocated by means ofthe link 0, lever n, and eccentric m. As the slide Zis pushed forward inthe direction of the arrow on the slide the pawl 19 is first Withdrawnfrom a notch 'i in the disk-holder and immediately thereafter thewedge-block r on the slide passes through the slots in the housing andthe tapered end 0 of the wedgeshaped block enters the slot 15 of thebolt 25, and as it continues to move forward the tapered end of theblock contacts with the inclined slot-wall of the bolt and withdraws thetongue at of said bolt from engagement with a notch 2' in thedisk-holder. During the interval between the disengagement of the pawland the withdrawal of the bolt from the notches t' the die-punch (l isstamping the button or disk in the hole 7L, and the disk-holder duringthis period is locked and prevented from moving. The slide and pawl 1)continue to move in the direction of the arrow on the slide until thepawl engages the next notch, (designated 2",) which is at the end of theforward stroke of the slide l. The die-punch is now withdrawn from thehole h. The slide and pawl, which latter is now in engagement with thenotch t", are then moved in the reverse or backward direction, andthereby the disk-holder g is revolved by the pawl to bring the next holeIt beneath the die-punch d and the bolt in engagement with anothernotch.

After each button or disk is formed by the die it remains in the holeand is carried around by the disk-holder over the chute 10, where itdrops out and is carried off by the chute.

The bolt is not withdrawn from the notches 1' until the pawl has beenwithdrawn, and the disk-holder is thereby held stationary while the pawlis being withdrawn.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a stamping-machine, the combination of a die-punch; a disk-holdermounted to be revolved and provided with a plurality of circumferentialnotches; a reciprocating slide provided with a wedge; a pawl carried bysaid slide and adapted to engage the notches on said holder; and a boltspring-pressed into engagement with said notches to lock the diskholderin a stationary position and arranged to be engaged by the wedge of theslide, whereby to withdraw said bolt from the said notches against theaction of its spring.

2. In a stamping-machine, the combination of a die-punch; a disk-holdermounted to be revolved below said die, said holder having a plurality ofcircumferential notches; a reciprocating slide; a pawl carried by saidslide and adapted to engage the notches on said holder; a bolt forengaging said notches to lock the disk-holder in a stationary position,and a wedge-block also carried by said slide for operating said bolt.

In a stamping-machine, the combination of a die-punch; a disk-holdermounted to be revolved below said punch and provided with a plurality ofcircumferential notches; a reciprocating slide at the side of saiddiskholder; means on said slide for revolving said disk-holder; awedge-block also on said slide and reciprocating therewith; a bolt forlooking saiddisk-holder in a stationary position, said bolt having aslot which receives the point end of said wedge-block whereby towithdraw the bolt from engagement with the notches in the disk-holder.

4. In a stamping-machine the combination of a revoluble disk-holderhaving a plurality of circumferential notches; a slide at the side ofsaid disk-holder; a wedge-shaped block on said slide and reciprocatingtherewith; a bolt for locking said disk-holder in a stationary position,said bolt extending crosswise of the said slide and having in its bottoma slot which receives the point end of said wedgeblock whereby the boltis drawn from engagement with the notches in the disk-holder, and aspring device for shooting the bolt when the wiedge-block has beenwithdrawn from the s ot.

In testimony whereof I affix my signature in the presence of twowitnesses.

HOWARD L. IVILSON. \Vitnesses:

FREDERICK S. Srrrr, CHARLES L. VIETSCH.

ICC)

lIO

